Fountain pen



July 27, 1943. s, M, SA'GER 2,325,550

FOUNTAIN PEN Filed June 4, 1942 2 SheetsSheet l july 27, 1943; 5, M SAGER 2,325,550

FOUNTAIN PEN Filed June 4, 1942 I 2 Sheets-Sheet 9 Patented July 27, 1943 A l l l Y Y u Y y A: Y

f nmgiieatienrunei, 1942, serial m4459103 :rms inventien-1pertainsto fonteinfpens fandntrcedetermining thedereeof llne 'fthenn more particularly to an 4 improved and vs impliiied W' with the filling metlied being laccomplished by form of ipen adapted to the 'filled with ia liquid-by the actionsof atmospheric lpressure byfmeans-of aniair control mechansmoperable whentheen is inserted in liquid to first Ypermit atmospheric filling -of the pen ,and then operable to :traps-the entered lcharge inthe pen'beQr-ethe-,penis rremoved from the lliquid. YIt yvill thus noted that the invention `relates to a liountaiirpen wherein vtheiordinary;manually opera-blertypes 2ef l lling mechanisms Asuch as ,lever1 operated rubber sacksi pump mechanisms or lplunger ,Ineens-gare ,all replaced `by a-simple air controlgyelve means which si-mplyfhas-to be opened and closed when the pen is 4prcieted int-a. @supply pfL liquid@ cause filling ,of the penirran amount-proportional to :the 4degree Yof subrr'ier-genceof `the -pen in the liquid-1. i

It is an robject of thisginvention to provide improved and simplified Vforms -Qf ,'fountainpens wherein the iilling oi the-penisaccomplished by means ofatmosphericpressure. l A

.It is also anobjeotof this invention ',tolprcvide k.anrimproved.and simpliedformof"fountainpen l containing a. dry ink chargegand adaptedrlto be lled with a. liquid by theactionlof atmospheric .pressure by ythe simpleoperationJotlanair con- .trol-veuve.means when tliepen is prciected into a .supplyeof theliquid. 1

yit is .a further* @eject-otitis invention heilpra- `ivide an `improved* type of fountain adapted to carry adr-y ini; Y containing cartridge andrhavf ing van air control Valve `means@ ated tooe 1 of Watertopermit atmosphericgpressure filling of ,thevpenwiththe watery. and further adapted "when closed to trap the enteredchargeof Water in `the ,pen to :permit the water .in Athe pen to Ac'lissolyfe the ,dry inkto forma supplyff writing fluidin thepen'r I l 4 Y. it.,

lIt vis `furthermore Tanobjcct of ithis, invention to Araovide ya fountainpen Whichmerely uses an air :control valve meansi or accomnlisliingzthe pen, said Vliquid being u either ai' prepared huid-vink .ora fliquid such as water .which coactswith and fdissolves `a dryink'in thefpen when therpenisoi a type which carries a dryinl; containing'car- ,tridge l `which is `operable .to l permit {filling .of` a pen'with merely Yepening end thenclosing the valve ccn- ,-fountainpen includingabarrel having, a feed bar Aand pen point engaged in oneend thereoiwliile the oppositeopen endithereof is equipped ivvithv an air control valve cap unit'lformed'to carry'areserve dry ink cartridge therein andaservice dry ink cartridge on thefexterior thereof for V.projection V the pen barrel; Isaid Naive cap' unit adapted .to be .operated'so that 'thejopening and closing thereof .governs 'the atmos'sheriegpressure lilling of the 'pen with a liquid .when vrthe `pen is projected into a supply of theliduidA '.QItisalso an objectfof this ,inyentiontovprovide a water and dry ink' typeof lfountain 'pehffor admitting a charge of iwater into the pen byatinospheric pressure and. including an ape'rtured Mcartridge -Vcontaining Ta""plurality` of different charges off dry' ink ,having different degrees" of ,solubility in the 'lwate'r so thatthe charesmaybe vconsecutively consumed inthe orfderof Atheir de- .gree.fsolubilityinyvten vIt uisi-'an important object' of this ,invention to provide animproved andsimpiied rermofroun- ,tain pen in which 'afdryink carrying lcaltridg'e maybe crriediby an air control'valvefniechanisrmby the fountan'pe'n section Aorby the fountain penifeedba-r sov that .theicharge of -dryink in the cartridge is accessible to be taken int'osolution by a charge of .Water adapted ,tfyfirstbeadn "initted into thepen by theafcti'onof Aatmospheric pressureA andthen adapte-dto beY trapped in ,the "Den by 'the operation ofthe air control valve means.V

A :further 'importantiobjectyf the inventionis to provide a Lfountainipen Y .150' Another object of kthe inventon-isnftobprovide Lasfeuntain pen including an air control Ineens the action' of atmospheric [pressure Whenthepen is partially'submergedlvand ,Whnan air `passage ncontrol.'vlalve in ,theeigposcd end of vtrieben `is 4fflrst opened andthe closed.` f

otherane further.,importentetjects er this ing the writing end of the fountain pen with the main cap removed, projecting into the glass of water to permit filling of the pen by the action of atmospheric pressure an amount equal to the submergence of the pen in the water when the control valve is opened.

Figure 3 is an enlarged fragmentary elevational View of the upper end of the pen illustrating the passaged air control valve means engaged through the valve seat end of the pen barrel.

Figure 4 is a transverse detail section taken on line IV-IV of Figure 1. i Y

Figure 5 is an elevational ViewY of a dry ink carrying cartridge removed from the pen. Y Figure 6 is ja fragmentary sectional and elevational View of a modified form of thepen wherein the barrel closure head or cap is provided with a dry ink carrying cartridge for insertion into the pen barrel and withy a reserve Vdry inkcarrying cartridge in a chamber of the barrel head.

Figure 7 is -a vlongitudinalsectional View of a modified form of fountain pen with the air control valve head shown inY elevation and -in closed position and illustrating a pen in which'it is not necessaryto provide a dryink cartridge if -it is desired to lill the pen Yby projecting the writfing jend thereofjin a supplyof ink when the air control means is opened.' t Y Figure 8 is an enlarged longitudinal sectional vview partly in elevation of another modified form lin the feed bar'of the pen. i

Figure 10 is an enlarged fragmentary'elevational and sectional View of the upper end'ofa rnodied form of pen wherein the barrel closure header cap and the threaded stem thereof are both chambered to serve as a reservedry inl; magazine for carrying an extra dry inl; cartridge on a closure head or knob for the chamber, and wherein the threaded stemalso carries adry ink service cartridge on the end thereof for insertion into the ink forming cham-ber'of the pen barrel to provide a reserve dry ink magazine type pen with a full length barrel.

As shown in' the'drawings:

Referring to Figures '1 to f5, inclusive; an improved type of'fountain-pen is disclosed which includes a pen barrel or body l which is constructed of an opaque material, a transparent material or a combination of both with the Vtransparent material preferably being used intermediate the ends of the pen to afford a view of the interior ink chamber 2 'in order that the vamount of ink or liquid within the barrel chamber 2 may be readily ascertained.l -The lower end integral section 3 Y'theouter end of which ter minates in an extension sleeve or collar l which serves as an ink guard member. Inteffrally formed around the lower portion of the fountain pen barrel between the section 3 and the ink guard sleeve or collar 4 is a threaded ring fiange 5 which is adapted to be removably engaged by a threaded portion 6 provided on the interior of a main fountain pen cap l. The main fountain pen cap 7 is provided to cover the writing end of the fountain pen when the pen is not in use and may be removed and engaged on the upper end of the pen barrel when it is desired to use the pen. The main cap is provided with a retaining tip for holding a pen clip 3 in position on the cap.

AProjecting through the ink guard d and tightly into the section 3 of the fountain pen barrel is a pen point or nib 9 `and a feed bar It.

The upper end of the fountain pen barrel or body l is formed with an end wall ll which is provided with an axial threaded opening or passage l2 which communicates with the inl: charm ber 2 at itsfinner end .and having its outer end communicating with or Yending in a valve Seat i3 formed in the outer end of the end wall i i of the fountain pen'barrel.

The upper end of the fountain pen barrel is adapted to be completed andV closed by means of an auxiliary cap or head lil the inner end of which is formed to provide a Valve i5 adapted to be tightly seated in the valve seat I3 to close the upper end of the fountain pen barrel-with an airtight seal. Integrally formed on the inner or valve-end of the auxiliary cap or'head iii is a threaded stem or shank: IS which is threaded through the threaded opening I2 in the end wall Y Il ofthe barrel and projectsinto the inl; chamber 2. The threaded shank i6 is provided with a longitudinally disposedair groove or passage il'. The air grooveor passage Il serves asan-escape for air coming from the interior of the fountain pen `barrel when the control valve at the upper end of the fountain'pen barrel `is opened.

Integrally formed on the inner end of the closure stem I'is an extension or plug i3 on which the open end of a dry ink carrying unit is adapted to be'removably engaged. 1

The dry ink carrying unit comprises a cartridge or shell I9 open at one end and closed at the opposite end. The cartridgeor shell I9 maybe formed of any suitable material and is provided with a pluralityv of openings or'ape'rtures ZE at theclosed end of the cartridge and with a plurality Aof widely spaced apertures l2l in the intermediate portion of the cartridge, asclearly illustrated in Figure 5. The 'cartridge i9 is charged with dry ink. In the form of cartridge illustrated in section in Figure l the cartridge or shell I9 is of a multiple type containing a primary charge 22 of dry ink which is relatively small and is engaged in the closed end of the cartridge in the vicinity of the closely associated apertures V2l). The cartridge also contains a secondary or major charge 23 of dry ink which contacts 'the primary charge f 22 at oneY end` and extends through the major portion of the cartridge leaving a recess at the'open end of the cartridgeto permit the cartridge to be secured on the plug lll as shown inFigure 1.

The primary charge 22 of dry ink in the cartridge consists of a quantity or supply of highly soluble dehydrated dry ink the particles or which are bound togetherby a suitable soluble binder so that the primary charge 22 is composed of materialwhich is practically per cent soluble magazine for carrying an extra dryink cartridge. The outer endrof the -secondarycap or'head 26 is provided with a threaded passage andwith a valve seat 30. j-,Threadedinto the threaded pas- I sage is a threaded stem 3| which is formed on the valve end'32 of a closure head vor plug 33 which when in placeforxns a `finished-.end for thefountain pen body. The innerY endxofthe ,threaded stem 3l is-provided with a.V plug portion similar to the portion lgof Figure;V 1 to form a'support for theopenendrof a reserve... dry, ink kcarrying cartridge I9, which is adapted .to -be positioned Within the magazine vchamber 29 so that when the cartridgein the fountain penchamber 2 is empty the reserve dryinlr carrying cartridge may be substituted in its place.` A Y The modied form of fountainv pen illustrated in Figure 6 is adapted` to be filled by the same simple method described in `connection with the pen shown in Figures l1 to 5, inclusive. Y

Referring to Figure l7 a, modifiedform of atmospheric pressure filling fountain, pen is illustrated in which the dry l.inlccarrying cartridge is omitted to provide a fountain pen which may be directly projected `intovasupply, of vfluid ink after which the air'controlvalve unit is` opened to permit a supply of inkptorberforced into the fountain pen barrel by the ,action of atmospheric pressure to a-height corresponding to the distance ofsubmergence ofthe` penY in the liquid ink. After the pen has been filled. witha charge of writing ink the airY control/*valve unit. isv closed before the pen is'removed fromthefink supply to trap the enteredcharge of inklwithin the pen after which the pen is removed fromfthe ink supply and the eX- terior of the Ysubmerged portion cf the penmay be'simply wiped off leaving the pen ready for use. The modified fornrof fountain -pen illustrated in Figure 7 is, similar tothe construction of the pen illustrated in Figures l to and the like parts are indicatedvr by corresponding reference numerals. Inrthismodied form-of the pen the only difference is that the long threaded stem I5 is replaced by-a short threadedstern 34 which Vis provided Withangairescape passage 35.

While; the modified form of fountain penillustrated in Figure A'I is adapted for use without a dry ink: carrying cartridge so that the fountain pen may be :filled with `agliquid ink instead of` making an linlr in the .fountain kpen barrelby the use of'water and dry Ainkit Will be understood that the typegof pengillustrated in Figure 1 may also be. projectedgintogliquidink and filled with a supplyythereof incasethe dry ink carrying cartridge has the dry ihk supply thereof used up and another d ry.1inkcartridge isnotliandy or available at. thev time that the-pen requires relng. a' Q v Y Figure 8 illustrates another modified form of combination Water and dry ing-fountainpenA v adapted tobe filled by the action of atmospheric pressurethrough the-.medium of openingv and closing a valvecontI'oL-.unitwhen the pen is sub-` merged in a liqufd-such'as Water. f

The form of penshown'inFigure 8 comprises a barrel or body 35, :whichmay be'constructedof an opaque material or ofnawcjombination.opaque material and.v transparent material. The barrel 3S at its upper end is closed by means rof an end Y wall 3l provided with -a..threadedopening or rpassage 38 the outer endofrwhich terminates at a valveseat 39. Adjustably engaged in the end Wall3'l of the fountain :pen barrel is an air controlY valve unit comprising` al secondary .cap or head 40. the finnergend; ofswhich is formed to provide a valvev4| `which when the head is in closedI position is Vadapted to seat on the valve seatS to close the upper end ofthe fountain pen barrel. Integrally formed on the valve portion 4| of lthe head; 40 is a threaded stem 42 which is provided with anair-passage or groove 43 to permit escape of the air from the inl: chamber 44 ofthe fountain pen barrel V35 when the valve 4l is in `open position.`

The bottom or opposite end of the barrel 36 is provided with a threaded collar or flange 48 for permitting a main closure cap for the Writing end of the pen to be threaded onto the barrel.

Removably engaged in the lower or exteriorly threaded end of the barrel 36 is a fountain pen section unit comprising `a guard 45 formed with a valve 46 and with a threaded shank 4l to permit the section to be` removably threaded into an interiorly threadedv portion of the barrel 36 to permit the valve 46vof the guard 45 to seat against the valvel seat formed in the lower end of the barrel, to providean air-tight t between the guard 45 and the pen barrel.

Engaged in the pen guard 45is a pen point or nio anda feedfbar I0. The ink feed grooves of theA feed barV are positioned to register with an ink outlet groove or slot 49 which connects up with a portion 5G formed at the inner end of the threaded shank 4l of the section.. The ink outlet groove or slot 49 is formed in a tapered collar 5l whichisintegrally formed around a base portion of a head or plug 52 integrally formed on theinnerend o'f thepen section or guard 45. v

Removably engaged on the section plug 52 and projecting into lthe chamber 44 of the barrel 3G, is the -openend'of an apertured inl; cartridge 53 containing a primary charge of dry ink 54 and a secondary charge of dry ink 55 to be respectively dissolved by va charge of Water in the chamber 44. The pen is adapted to be filled with a charge of water by the action of atmosphericpressuregwhen the control valve 4i is opened by operation of the head 4B Yand when the writing end of the' pen is projected into a container of water similar to the arrangement illustrated in Figure 2 of the drawings. By referring to Figure 8 it will be noted that the base collar 5l of the wpen sectionserves as a stop for the open' end of the ink carrying cartridge when the cartridge is engaged on the supporting plug 52.

Referring to Figure 9 of the drawings another modified form of combination water and dry ink type cf fountain penis illustrated. It comprises a pen body and an air control valve unit similar to that illustrated and described in connection with the pen' shown in Figure 7 and corresponding parts of the penbody and the valve unit are correspondingly numbered. Y In the modified forrnof fountain pen disclosed in Figure .9 a dry'ink cartridge carrying feed bar unit togetherwith a pen point or nib 9 is engaged in the lower section end of the'body or barrel of the 'fountain pen.- The ink carrying feed bar unit comprises a5 feed ba'r 56 provided with a longitudinal passage 51 and with a notch 58 in one side of the outer e'n'd portion thereof. Frictionally engaged longitudinally in the feed bar slot 5l is aV combination feed vbar plug and dry ink carrying cartridgerunit comprising a plug portion 59 the inner end of which is recessed to provide a'dry inkchamber 5U to form a dry ink carrying cartridge or. shell 6l having a plurality of apertures 62 provided around the inner end portion thereof where the cartridge-'projects into the ink chamber of thermmtain` pen barrel. Engaged radiallyin the outer portion or vthe plug e9 is a pints which when'theplug is properly inserted inthe feed 'bar 55S will `seat .in theiimer end of: the notch 58. "The chamber Bil of fthe combination plug and dryink carryingfcartridge is nlled `with a primary charge Or-dryinkf64 and a'secondary charge of dryink .65 which 'isfimore' slowly dissolvable. than ithe `primary charge for dry ink 54.k l Y. I

It will be noted that'thetinodified lforrn .of fountain pen illustrated inF-gure '9 Lisisimilar to the type of pen .illustrated inlFigure 7 `theonl'y difference being in that the `'standard type .olf feed bar l of Figure/7 is replaced by the cartridge carrying type of feed 'b'ar '56. The 'fo'untain .pen illustrated in `Figure 9 '1S adapted "t0 be lled with a chargelof Water by the lactin Vo atmospheric pressure when the :writing 'end o'f theipen is inserted'intofa container fof 'water and the valve control mechanism at the upper Aend of .the pen is operated-fas hereiribefor'e described torst ati-init achar'ge' 'of water into the `fountain .pen barrel and 'then trap-'the entered charge by closing thevalvecontro'l mechanism.

Figure illustrates va `modii'ed magazine type of combination water and dry ink fountain pen wherein both the auxiliary cap -or head `'and the threaded stem thereof are vv'formed with a reserve dryink chamber, which may beolosedby means of slotted Vtip or button on lthe inner end of which a reserve `dry -irik cartridge Tis carried to project into the reserve chamber. l tnlthis modiiied form of the fountain pen the body of the penis the same asthat illustrated in Figure 1 and corresponding 'parts Pare nui`nbered accordingly.

VThe valve seat end of the'pen Vbarrel l, is adapted to be `closed loymeans of a combination barrel closure magazine -unit comprising an auxiliary` head Orca-p -BS'th'e inner -end of Whichris formed to providea valve -V6'! Aadapted to tightly' seatin the barrel valve seat I3'to close'the up per end of the pen barrel with `an aintght seal. Integrally formed on the inner A`or valve end of the cap or head 6B is a threaded stem or shank 68 which is threadedthr'ough the `opening l2 in the barrel end AWall lI Ito `project into thefink chamber 2. The threaded stem E8 is provided with af longitudinal air groove or passage 69 which extends from the'bottOm ofthe fstem't to apoint 'i0 a short distance below the 'upper end of the 'threaded Aportionyoi the stem. The air groove or passage'vBS serves asian-escape for air from the ink chamber 2 when the control valve 61 is opened an amount suilicient to bring the up--` per end'of the groove 69Vup to the valve seat i3.

Integrally formed onV the inner end'of'the closure stern S8 isan extension or plug "H on which the open'rehd of adry inkv cartridge I9 is en'- gagedto project into the ink forming chamber 2 of the pen barrel. The Acartridge I9 is shown as carrying a single charge for dry ink 22.

` lFor the purpose of carrying a reserve supply of dry ink the cap or' head BB is formed as a magazine by providing a d-ry ink reserve chamber 12 which extends through the cap or head 66 downwardly intothe stein 63. The upper end ton is formed with a diametrical'slot` or groovei6-to receive the'edge of a coin oriany suitable toolor device to remove theltip 2li or-seeure the saine inplace. v

integrally formed on the lnii'ereene of the tip shank u a projection `or-'plug 11 ufor receiving tne'npper fiend or a reserve uit' inreearrying carchamber 12. `This yoriariigement `permits the earrying of an extra supplyzoforyilniiywithoutinter'fering 'with the length for capacity for the fountain pen barrel. If desired-hrt' -ifnk'lcartriage le may be used lcarni/lng `'only a single .charge of dry ink or 2! :as preferred, instead While the fountain have been illustrated and described *as using' dry ihkoiiifying cartridges of Yeither fa single Yor multiple unirse type, it will of course 'be understood tht'the cartridges may loe-replaced, Aif desired Aoyfticy ink pellets 'which may be-deposited-in the link oriing :chamber 2 of ithefpen barrel l through the end of the barrel yloylrmerely removing fthe .upper cap or head andlts threaded stem;

llt Will thus lfbe -ioted that v'aix improved 'type of fountain pennes been :devised wherein 'the filling ofthe pen fis `not vclepelaiie'nt upon the manual operation `of ruling mechanisms which are =-corn'pletelyiintterl "since the pen fis adapted tov 4be .filled bythe action of atmospheric pressure when thewriting ei-id "or the fpe'n is sub# merged .in la' liquid and a 'control valve :mechanism is iirst opened'to Vpermit :atmospheric pressure illng of the pen with ltlle IiQldfater which Ait is only necessary to close the val-ye mechanism to trap thefcharg'e-of liquid in the 'peut l The construction v'or the pen 'ls s'uohuthat by the omission of mechanical nlllng mechanisms, the liquidrchamb'er of' the pen is of substantially maximum' capacity; The degree b-fnllihg ofthe liquid `chamber is controlled hythe'distance that the writing end of the' fountain .penisihserted into la Isupply''liquid ,permitting the lllqlii'cl to loW upwardly Into the pen rvby :the notion kof atmospheric. pressure until the levelothe fliquid inthe pen iscin register wifh the level of the li'qid into which the -pen is projected; .l Thepenisof such a isimple' construction'that the'nilin'g and the trapping of a Acharge of liquiii'in thepe'n is mere-v lyfeontrolled by the `opening and closing of `an air escape l control valve mechanism preferably positioned at vthe upper encor 'the pen barrel opposite the Lwritin'gei'id of thepen; 1 5

"lt will or course 4be.'uhdenntoodi that various details of construction maybe varied through a wide range Without departlngfrohthe principles of this invention and, it is, therefore, not :the purpose limit the patent granted hereonother; wise than necessitated by the 'scopeof'the apponder!"claims,V

I claim as my invention:

1; In a water carrying' type fof fountain pen, a dry ink unit for insertion therein; and comprising' a `'shell having apertures therein, la primary charge of highly .soluble dry lnk in `sind shell, and a secondary charge `of slowe'rdissolvihg dry lnk in the shell to b takenintollltionby the water in thepen afterlthe primary charge of dry yinit has been consumed for fthe making' of awritirig .fluid in the pen. 1 g

2. The combination `with `:imiter und dry inl;` type of fountain pen, ora Tary lnk unit for use therein and comprising' an 'pi'tured shell, .and a plurality of charges "ordr'y inltlengaged therein each having a diierentfdegre'of slubilityflfor successive use in vthe pen for obsi'ptioiiby the water toproduce awriting fluid' 'forme pen.

3. In a water and dry inktype of fountain pen, including a dry ink unit comprising a shell having a plurality of vclosely associated apertures and widely spaced apertures in different portionsr thereof, and dry ink charges of different degrees of solubility carried in the shell with the dry ink of greater solubility positioned adjacent the closely spaced apertures and with the dry ink of` slower solubility positioned for access by the widely spaced apertures.

4. A fountain pen adapted to be filled with a liquid by inserting the writing end of the pen into the liquid a distance depending upon the height towhich the pensbarrel is to be lled, allowing the liquidvto ow upwardly into thel barrel by the actionrof atmospheric pressure and simultaneously venting the air inthe barrel through an outlet in the other end of the barrel, and trapping liquid inv the barrel by closing the air outlet,v said pen comprising a barrel, writing means at one end thereof',` an opening at the other end thereof and a valve seat formed on the periphery of said opening, a threaded plug projecting into said barrel and through said opening and having means cooperable with the inner face of the barrel to form a passage for thevescape of air-When the pen is being filled with liquid, a valve formed on said plug for seating on said valve seat to close said opening and shut ofi said air passage and trap the liquid in the barrel,

and means on the internally projecting end of said plug to hold a supply of dry ink to be dissolved by said liquid.

5. A fountain pen adapted to bey iilledwith liquid such asfwater for dissolving dryink in a :i

cartridge inthe pen barrel to form liquid ink by insertingthe writing end of thepen into* liquid to a depth 'determiningthe height to which the barrel is to be filledfallowing the liquid to oW upwardly into the barrel bythe action of 'atmosl" pheric pressureand simultaneously allowing escape of Aair from the 'barrel through an outlet in the other endof the barrel, and trapping the entered yliquid in the barrel by -closng the air outlet, said penV comprising an elongated pen barrel, a dry ink cartridge in said barrel, a writing assembly at the lowerend of the barrel com-J municating with the interior of the barrel, and means for controllingV the escape of air'from the barrel and for trapping liquid in the barrel, said means comprising an elongated plug with an upper portionthreaded in and of substantially the same diameter as the interior of the upper en'd'of the barrel to provide arclosure therefor and with alowerportion having a cut-away portion cooperable with the inner kiacepofv the barrel to forma vent passage to vent air from the barrel when the upper portion of the plug is withdrawn from the barrel. 1 f `i i V6. A .fountain pen adapted to be lled with liquid such as water ordissolving dry ink in the pen lbarrel to form liquidink by inserting the lower end of the pen intoliquid to a depth determining the height to which the pen barrel is :to berlled, allowing theliquid to flow upwardly into the barrel-bythe action of atmospheric pressure and simultaneously-allowing escape of air from the barrel through an outlet in theiupper end o f the barrel, and trapping the entered liquid in the 'barrelby' closing the airoutlet, said pen comprising an elongated barrel, a writing assembly at the lowerendof the barrel communicating with the interior cffthe barrel,A means for controlling the v'escapev of air; from the, barrel and for s trapping liquid inthe barrel, said means comprising an elongated plug With an upper portion threaded in and of substantially the same diameter as the interior of the upper end of the barrel to provide a closure therefor and with a lower portion having a cut-away portion cooperable'with the inner face of the barrel to form a vent passage to vent air from the barrel when the upper portion of the plug is withdrawn from the barrel, and an extension on said plug cooperatingiwth the upper end of the barrel to provide a seal therefor when the upper portion of said plug is within the barrel.

'7. In combination, 'in a dry ink type fountain penadapted for filling by action of atmospheric pressure when inserted in a liquid point downward With air venting'means at the upper end open and for trapping liquid therein by closing ofthe airventing means, a pen barrel, writing means at onevend of and having fluid communication withv said barrel, means within the barrel to hold dry ink in the barrel, a supply of dry ink tto be dissolved by liquid entering the barrel, and venting means at the other end of the barrel to allow egress'of air from the barrel during filling of the pen, saidpmeans comprising an opening in said other end of the barrel forming a' valve seat, a manually operable valve member to seat on said valve seat, a threaded extension of said valve member projecting through said opening and into the barrel and havingvent means thereon terminating shortfof the valve member and cooperable with the inner face of the barrel to provide passage for air from the barrel, said extension and valve member being rotatably and longitudinally movable relative to the barrel to shut off air passage and to close said opening in the barrel, respectively.

8. A fountain pen adapted to be lled with liquid for dissolving dry ink in the pen barrel by inserting the lower end of the pen into liquid to a depth determining the height to'whioh the vbarrel may be iilled, allowing liquid to flow upwardly into the barrel bygtheeaction ofatmospheric pressure and simultaneously venting air v45 from the barrel through the upper end of the barrel, and trapping liquid in the barrel by closing the upper end of the barrel, said pen comprising a barrel, writing means at the lower end of and communicating with the barrel, means to hold dry ink in the barrehand air vent control means at the upper end of the barrel comprising a plug threaded in the barrel to provide a closure therefor and having ya lower portion provided with a depressed section in its surface cooperable with the inner faceof the barrel to provide a passage for air out of the-barrel when said plug is positioned to bring the upper edge of said depressed section substantially to or outside the upper end of the barrel, and aclosure valve seating on the upper end of the barrel to seal the same when the plug is positioned substantially wholly within the barrel, said plug and said valve being movable longitudinally relative to the barrel.

9. A fountain pen comprising a barrel communicating with writing means at its lower end and being provided at its upper end with air vent control means, said means comprising a plug having an upper section-formed to seat on the edge of the barrel at its upper end in sealing relation-therewith, a threaded intermediate section ofra size to substantially close the interior of the upper end of the, barrel, and a threaded lower section with passage means formed therewith cooperable with the inner face of the barrel to Vprovide air vent means for the barrel when the intermediate section is substantially withdrawn from the barrel, said upper section engaging said edge when the intermediate section is substantially within the barrel.

10. A dry ink type fountain pen adapted to be lled by the action of atmospheric pressure when inserted in liquid point downward and in venting condition, and to trap liquid therein upon the closing of a vent, said pen comprising a barrel with writing means at its lower end and an opening at its upper end adapted to be both closed and sealed by vent closing means comprising a valve member for sealing engagement with a, beveled seat at the upper peripheral edge of the barrel to seal said opening when a threaded member depending from said valve member is positioned substantially Wholly within the barrel, said threaded member extending through said opening and having its upper portion threadedly cooperable with an interior portion of the barrel to close the upper end of the barrel, and having its lower portion ormedwith passage means cooperable with the interior of the barrel to provideY a vent for air in the barrel when said upper portion issubstantially outside of the barrel.

SOLOMON M. SAGER. 

